Device for adjustably attaching cylinder locks to doors and furniture locks



June 24, 1930. H. MUNCH 1,766,081

DEVICE FOR ADJUSTABLY ATTACHINC- CYLINDER LOCKS TO DOOR AND FURNITURE LOCKS Filed July 23, 1929 122mm for z Patented June 24, 1930 UNITED STA TES- ATENTH QFFic HEINRICH MIINCH, OF SCHLAGIBAUM, NEAR VELBERT, GERMANY, XSSIGNOR TO THE FIRM SCHLOSSFABRIK-AKTIENGESELLSCHAF'I VORM. WILH. SCHULTE, OF SCHLAG;

BAUM, NEAR VELBERT, GERMANY DEVICE FOR ADJUSTABLY ATTACHING CYLINDERLOCKS T DOORS AND FURNITURE LOCKS Y Application filed July' 23, 1929, Serial No. 380,239, and in Germany Apri1'21, 1927.

5 ness of the door or article to which the lock is to be attached.

The object of the invention is, first, to mount the barrel upon the lock casing and connect it with the cylinder lock so that by rotation, without endwise movement, of the barrel the cylinder lock will be adjusted to properly dispose the parts to suit the thickness of the door; second, to mount and connect the barrel withthe lock casing so that, after adjustment of the barrel, no special locking of these parts together will be required to maintain their adjusted relationship, while at the same time, after the parts are adjusted and the lock applied to the door, the barrel will be inaccessible so that the adjustment of the parts cannot be changed without removal of the lock from the door; third, to provide a connection between the barrel and cylinder which obviates very fine adjustments being made through partial rotary movements of the .barrel; and fourth, which permits adjustment of the cylinder lock without disturbing the turn plug or knob spindle,

i. e., without shifting them out of their normal working positions.

The drawing represents an embodiment of the invention, in connection with which only one of the walls or plates of the lock casing has been shown for the sake of simplicity.

In this drawing Fig. 1 represents a longitudinal section through the cylinder lock and coacting parts,

Fig. 2 is a cross-section along the line AA of Fig. 1 seen in direction of the arrows drawn at the line of section,- and Fig. 3 is a front-view.

a is the wall or plate of a lock casing, b a cylinder lock with radial pin tumblers, and 0 the plug or turn cylinder for actuating the lock spindle n. A circular metal retainer plate-f, perforated, like plate a for passage of the spindle, is attached to the plate a by screws or other suitable fastenings d. The metal plate carries two rigid guide bars 9 engaging bores h in the cylinder lock 6 and along which said cylinder lock is slidably guided in a longitudinal direction. The plate f is provided in its side facing plate a; with a groove receiving a flange k on a barrel or sleeve 2' surrounding the cylinder lock, whereby the sleeve 2' is connected to the plate a so as to be rotatable but fixed against longitudinal movement with respect to the cylinder lock. The cylinder lock is provided upon its exterior with an extremely fine thread, whilst a part m at the extreme outer or free end of the sleeve 1' is threaded to engage in the thread of the cylinder lock.

It will be seen, therefore, that it is possible, by turning the sleeve 2', to shift the cylinderlock 6 along the guide-bars gin an inward or outward direction as desired and thus to adjust the lock to the thickness of the door to which the lock is to be attached. In this operation the cylinder-lock b is not turned, with the result that neither the position of the key-hole 0 nor the position of the lock spindle 'n, is changed. For this reason the adjustment of the cylinder-lock may be effected by very small amounts or to a fine degree, viz. by amounts which correspond to only a partial rotation of the sleeve 2', while on the other hand, the turn plug a of the cylinder-lock need not be uncoupled when adjusting thev Wards of the door-lock. As the guide rods are fixed on the lock casing and the threaded sleeve is rotatably mounted on said casing, the adjustment is obtained by merely rotating the threaded sleeve, disconnection of the sleeve from the door lock is not required for the adjustment, and no locking connection is necessary between the sleeve and the cylinder lock. Furthermore, in view of the fact, that the cylinder-lock proper cannot be rotated and that the rotatable sleeve 71 is inaccessible after the lock has been placed in position, a displacement of the cylinder-lock is no longer possible after final attachment of the lock to the door. A special securing of the adjusted look by means of screws or the like'is also avoided.

I claim: 1

'1. Ina lock, a lock casing, a support attached to a wall of said casing, guiding means carried by said support, a cylinder lock slidably and non-rotatably engaging said guid ing means, and abarrel in engagement with said support so as to be held from axial move: ment'while ermittedto revolve, said cylinder lock and arrel hailing a threaded connection whereby on rotation of the barrel the cylinder lock will be slidably adjusted toward or from said casing wall on said guiding means. 7 v2. A lock of the character set forth in claim 1 wherein the threaded connection comprises a continuous peripheral thread on the outer periphery of the lock casing and an annular inwardly extending threaded projection on the inner periphery of the barrel.

In testini'ony Whgi'ebf I afiix my signature.

' HEINRICH MUNCH. 

